申请人:Asahi Kasei Kabushiki Kaisha
公开号:EP3981834A1
公开(公告)日:2022-04-13
The present disclosure is directed to provide a polyacetal resin composition which reduces mold contaminations, formaldehyde released from molded articles, and occurrence of foreign matters in the molded articles, even when the molded articles are produced under conditions where the materials are exposed to a high temperature for long time. A polyacetal resin composition of the present disclosure contains: a polyacetal resin (A); and a semi-aromatic polyamide resin (B) which contains a dicarboxylic acid unit containing 75 mol% or more of an isophthalic acid unit, and a diamine unit containing 50 mol% or more of a diamine unit having a carbon number of 4 to 10, and has a number average molecular weight Mn of 3,000 or more and 20,000 or less.
本公开旨在提供一种聚缩醛树脂组合物,该组合物可减少模具污染、模塑制品释放的甲醛以及模塑制品中异物的发生,即使模塑制品是在材料长时间暴露于高温的条件下生产的。本公开的聚缩醛树脂组合物包含:聚缩醛树脂(A);和半芳香族聚酰胺树脂(B),后者包含二羧酸单元,其中异酞酸单元的含量为 75 摩尔%或以上,二胺单元,其中二胺单元的含量为 50 摩尔%或以上,二胺单元的碳数为 4 至 10,平均分子量 Mn 为 3,000 或以上 20,000 或以下。